Connecting structure of upper chair surface and foot rod of metal chair

Abstract

The utility model discloses a connecting structure of an upper chair surface and a foot rod of a metal chair, and particularly relates to the field of chairs, the connecting structure comprises a connecting piece arranged between the chair surface and the foot rod, the chair surface comprises a chair surface side rod and a chair surface front rod which are intersected, and the connecting piece is a corner arc sheet connected among the chair surface side rod, the chair surface front rod and the foot rod. Each corner arc sheet comprises an arc sheet main body with an outer convex arc surface, a welding edge I used for being connected with a chair surface side rod in a welding manner, a welding edge II used for being connected with a chair surface front rod in a welding manner and a welding edge III used for being connected with a foot rod in a welding manner; and the welding edge I, the welding edge II and the welding edge III are all positioned on the edge of the arc sheet main body. The corner arc sheets are formed by stamping, and the manufacturing and forming process is simple; after the corner arc pieces are punched to form shapes correspondingly matched with the connecting parts of the chair surface side rods, the chair surface front rods and the foot rods, the corner arc pieces are connected with the chair surface side rods, the chair surface front rods and the foot rods which are of tubular structures through welding and are finally polished, the whole metal chair is light in weight, and after the connecting seams are polished, the metal chair is smoother and more attractive.

Description

Technical Field

[0001] This utility model belongs to the field of seating technology, and relates to a metal chair, particularly a connection structure between the seat and the leg of a metal chair. Background Technology

[0002] A chair is a seat with a backrest, and some chairs also have armrests. With the development of modern technology, there are many types and materials for chairs. Among them, aluminum alloy chairs are widely used because of their light weight, high strength, easy installation and cost-effectiveness.

[0003] Due to technical reasons, existing aluminum alloy seats initially used castings instead of castings. However, castings were not only expensive and heavy, but the seat and leg were mostly connected by direct welding, which required argon arc welding. Furthermore, welding was often done by having one part's end rest against the side of another part, making subsequent grinding inconvenient. Excessive grinding could also lead to insufficient strength, poor surface quality, and excessive porosity, making the process time-consuming and labor-intensive. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a connection structure between the seat surface and the leg of a metal chair.

[0005] The objective of this utility model can be achieved through the following technical solution: A connection structure between the seat surface and the footrest of a metal chair, comprising a connector disposed between the seat surface and the footrest, characterized in that the seat surface includes intersecting seat surface side rods and seat surface front rods, and the connector is a corner arc piece connecting the seat surface side rods, seat surface front rods and footrests, the corner arc piece including an arc piece body with an outwardly convex arc surface, a welding edge one for welding to the seat surface side rod, a welding edge two for welding to the seat surface front rod, and a welding edge three for welding to the footrests, wherein welding edge one, welding edge two and welding edge three are all located at the edge of the arc piece body.

[0006] In the aforementioned connection structure between the seat and the leg of the metal chair, the seat side bar and the seat front bar, the seat side bar and the corner arc plate, and the seat front bar and the corner arc plate are all connected by welding.

[0007] In the aforementioned connection structure between the seat and the leg of the metal chair, the side leg of the seat and the front leg of the seat are connected by welding with inclined wedge surfaces.

[0008] In the aforementioned connection structure between the seat and the leg of the metal chair, the side leg of the seat and the front leg of the seat intersect perpendicularly.

[0009] In the aforementioned connection structure between the seat and the leg of the metal chair, the top of the leg is connected to the corner arc plate, the side bar of the seat, and the front bar of the seat by welding.

[0010] In the aforementioned connection structure between the seat and the leg of the metal chair, the top of the leg is connected to the side bar of the seat and the front bar of the seat by welding with inclined wedge surfaces.

[0011] In the aforementioned connection structure between the seat and the leg of the metal chair, the plane formed by the intersection of the leg and the side bar of the seat and the front bar of the seat is perpendicular to the plane formed by the intersection.

[0012] In the aforementioned connection structure between the seat and the leg of the metal chair, the corner arc plate is a stamped arc plate structure with an eighth of a spherical surface.

[0013] In the aforementioned connection structure between the seat and the leg of the metal chair, the side bar of the seat, the front bar of the seat, and the leg are all metal tubular components.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. The corner arc sheet is made by stamping, and the manufacturing process is simple.

[0016] 2. After the corner arc piece is stamped out to match the corresponding shape of the connection part of the seat side rod, seat front rod and leg rod, it is then connected to the tubular seat side rod, seat front rod and leg rod by welding. Finally, it is polished. The whole metal chair is lightweight and the joints are more rounded and flat after polishing, which makes it more beautiful. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the corner arc plate in this utility model.

[0018] Figure 2 This is a top view of the metal chair with this utility model.

[0019] Figure 3 This is a front view of a metal chair with this utility model.

[0020] Figure 4 This is a side view of the metal chair with this utility model.

[0021] In the diagram, 1 is the leg bar; 2 is the side bar of the chair seat; 3 is the front bar of the chair seat; 4 is the corner arc plate; 401 is the main body of the arc plate; 402 is the first welded edge; 403 is the second welded edge; and 404 is the third welded edge. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] Reference Figures 1-4 This embodiment is a connection structure between the seat surface and the leg post 1 of a metal chair. It includes a connector disposed between the seat surface and the leg post 1. The seat surface includes intersecting seat side rods 2 and seat front rods 3. The connector is a corner arc piece 4 connecting the seat side rods 2, seat front rods 3 and leg post 1. The corner arc piece 4 includes an arc piece body 401 with an outwardly convex arc surface, a welding edge 402 for welding to the seat side rods 2, a welding edge 403 for welding to the seat front rods 3 and a welding edge 404 for welding to the leg post 1. The welding edges 402, 403 and 404 are all located at the edge of the arc piece body 401. The seat side rods 2 and seat front rods 3, the seat side rods 2 and the corner arc piece 4, the seat front rods 3 and the corner arc piece 4, the top of the leg post 1 and the corner arc piece 4, the seat side rods 2 and the seat front rods 3 are all connected by welding. The corner arc piece 4 is made by stamping, which is simple to manufacture, lightweight, and has clear edges, requiring little further processing.

[0024] In a further preferred embodiment, the side rod 2 and the front rod 3 of the chair seat are connected by an inclined wedge weld, and the top of the foot rod 1 is also connected to the side rod 2 and the front rod 3 of the chair seat by an inclined wedge weld. Most of the weld seams formed are located on the surface of the metal chair, which is easy to polish and makes the surface smoother and more aesthetically pleasing after polishing.

[0025] Preferably, the side rod 2 of the chair seat and the front rod 3 of the chair seat intersect perpendicularly.

[0026] More preferably, the plane formed by the intersection of the footrest 1, the side rail of the seat 2, and the front rail of the seat 3 is perpendicular to the plane formed by their intersection.

[0027] In a further preferred embodiment, the corner arc plate 4 is a stamped arc plate structure with an eighth of a spherical surface. The seat side rod 2, the seat front rod 3, and the foot rod 1 are all metal tubular components. The connection surface between the corner arc plate 4 and the seat side rod 2, the seat front rod 3, and the foot rod 1 is relatively small, which can effectively achieve the effect of lightweighting.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A connection structure between the seat and the leg of a metal chair, comprising a connector disposed between the seat and the leg (1), characterized in that, The seat includes intersecting seat side rods (2) and seat front rods (3). The connector is a corner arc piece (4) connecting the seat side rods (2), seat front rods (3) and foot rods (1). The corner arc piece (4) includes an arc piece body (401) with an outwardly convex arc surface, a first welding edge (402) for welding to the seat side rods (2), a second welding edge (403) for welding to the seat front rods (3), and a third welding edge (404) for welding to the foot rods (1). The first welding edge (402), the second welding edge (403), and the third welding edge (404) are all located at the edge of the arc piece body (401).

2. The connection structure between the seat surface and the leg post of the metal chair according to claim 1, characterized in that, The chair seat side rod (2) and the chair front rod (3), the chair seat side rod (2) and the corner arc plate (4), and the chair front rod (3) and the corner arc plate (4) are all connected by welding.

3. The connection structure between the seat surface and the leg post of the metal chair according to claim 2, characterized in that, The side rod (2) of the chair seat and the front rod (3) of the chair seat are connected by welding through an inclined wedge.

4. The connection structure between the seat surface and the leg post of the metal chair according to claim 3, characterized in that, The side bar (2) of the chair seat and the front bar (3) of the chair seat intersect perpendicularly.

5. The connection structure between the seat surface and the leg post of the metal chair according to claim 1, 2, 3, or 4, characterized in that, The top of the foot bar (1) is connected to the corner arc plate (4), the side bar of the seat (2) and the front bar of the seat (3) by welding.

6. The connection structure between the seat surface and the leg post of the metal chair according to claim 5, characterized in that, The top of the foot bar (1) is connected to the side bar (2) of the chair seat and the front bar (3) of the chair seat by welding with inclined wedge surfaces.

7. The connection structure between the seat surface and the leg post of the metal chair according to claim 6, characterized in that, The plane formed by the intersection of the foot bar (1) and the side bar (2) and front bar (3) of the chair seat is perpendicular to the plane formed by the intersection of the foot bar (1) and the side bar (2) of the chair seat.

8. The connection structure between the seat surface and the leg post of the metal chair according to claim 1, characterized in that, The corner arc plate (4) is an arc plate structure with an eighth of a sphere, which is made by stamping.

9. The connection structure between the seat surface and the leg post of the metal chair according to claim 1 or 8, characterized in that, The chair seat side bar (2), chair front bar (3) and foot bar (1) are all metal tubular components.

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